The CXP88852/88860 is a CMOS 8-bit microcomputer which consists of A/D converter, serial
interface, timer/counter, time base timer, high
precision timing pattern generation circuits, PWM
output, VISS/ VASS circuit, 32kHz timer/counter,
remote control receiving circuit, VSYNC separator
and the measurement circuit which measure signals
of capstan FG amplifier and drum FG/PG amplifier
and other servo systems, as well as basic
configurations like 8-bit CPU, ROM, RAM and I/O
port. They are integrated into a single chip.
Also, CXP88852/88860 provides sleep/stop function
which enables to lower power consumption.
Features
• A wide instruction set (213 instructions) which cover various types of data
— 16-bit arithmetic/multiplication and division/boolean bit operation instructions
• Minimum instruction cycle250ns at 16MHz operation
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
Connected to RECCTL (+) and RECCTL (–) with the internal switch for
playback. (2 pins)
Input PBCTL signal with capacitor coupled.
(2 pins)
PBCTL signal 1st amplifier output.
PBCTL signal 2nd amplifier input.
Capacitor connecting pin for the slope setting of the CTL writing
trapezoidal wave.
Capacitor connecting pin for the VREF level smoothing of DPG, DFG
and CFG.
Capacitor connecting pin for the CTL and AGND smoothing.
Analog signal input circuit GND pin.
AMPVDD
Analog signal input circuit power supply pin.
– 5 –
CXP88852/88860
SymbolI/O
EXTAL
XTAL
TEX
TX
RST
Input
Output
Input
Output
Input
NC
MP
Input
AVDD
AVREF
Input
AVSS
VDD
VSS
Description
Connecting pin of crystal oscillator for system clock. When supplying
the external clock, input it to EXTAL pin and input the opposite phase
clock to XTAL pin.
Connecting pin of crystal oscillator for 32kHz timer clock. When used
as event counter, input to TEX pin and leave TX pin open.
(In this time, feedback resistor is not removed.)
System reset pin; Low level active.
NC pin. Connect this pin to VDD for normal operation.
Test mode input pin. Always connect to GND.
Positive power supply pin for A/D converter.
Reference voltage input pin for A/D converter.
GND pin for A/D converter.
Positive power supply pin.
GND pin. Connect both Vss pins to GND.
– 6 –
Input/Output Circuit Formats for Pins
A
A
AAA
AAAA
CXP88852/88860
PA0/PPO0/
HGO
1 pin
PA1/PPO1
1 pin
Circuit format
Port A
HOUT
PPO0
PA0
Data bus
RD (Port A)
HOUTE
Output becomes active from high impedance by
data writing to port.
PPO1
PPG control status register bit 0
Tri-state control selection
PPO1
PA1
Data bus
HSEL
A
MPX
A
When resetPin
Hi-Z
MPX
Hi-Z
PA2/PPO2
to
PA7/PPO7
6 pins
PB0/PPO8
to
PB7/PPO15
RD (Port A)
Output becomes active from high impedance by data
writing to port.
Port A
PPO data
Port A data
Data bus
RD (Port A)
Port B
PPO data
Port B data
Data bus
Hi-Z
Output becomes active from high impedance
by data writing to port.
Hi-Z
RD (Port B)
Port B tri-state
control
8 pins
– 7 –
CXP88852/88860
A
AA
PC0/PPO16
to
PC2/PPO18
PC3/RTO3
to
PC7/RTO7
8 pins
PD0/INT1/
NMI
PD1/RMC
PD4/CS0
PD7/SI0
Port C
Data bus
Port D
PPO, RTO data
Port C data
Port C direction
RD (Port C)
RD (Port C direction)
Data bus
Circuit format
Port D data
Port D direction
Input protection circuit
IP
IP
When resetPin
Hi-Z
Hi-Z
4 pins
PD2/PWM
PD3/TO/
DDO/ADJ/
SRVO
PD1: Remote control circuit
PD0: Interruption circuit
PD4, 7: Serial CH0